Remove apple core. Thinly slice the entire apple.
Line a cookie sheet with parchment paper and place apple slices on it.
Sprinkle with cinnamon.
Bake at 275 degrees for two hours. At the end of hour one flip them over so
they bake evenly.*Check
on them at the hour mark and every 30 minutes after that. Once they look nice
and crispy take them out and enjoy. :)